Change in coreboot[master]: ec/google: Add PSRC and PBOK method

[Varshit B Pandya (Code Review)]

Attention is currently required from: Subrata Banik, Tim Wawrzynczak, Rizwan Qureshi.
Varshit B Pandya has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/62945 )

Change subject: ec/google: Add PSRC and PBOK method
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Patch Set 14:

(3 comments)

File src/ec/google/chromeec/ec_dptf_helpers.c:

https://review.coreboot.org/c/coreboot/+/62945/comment/be02e6b9_8e8dc311 
PS13, Line 125: acpigen_pop_len(); /* Method PSRC */
> `acpigen_write_method_end()`

Done

https://review.coreboot.org/c/coreboot/+/62945/comment/703e1b20_9d16635c 
PS13, Line 143: acpigen_pop_len
> `acpigen_write_method_end()`

Done

https://review.coreboot.org/c/coreboot/+/62945/comment/87cdf485_5762afa2 
PS13, Line 339: acpigen_pop_len(); /* Scope */
> `acpigen_write_scope_end()`

Done